path: root/drivers/gpu/host1x/bus.h
AgeCommit message (Collapse)AuthorFilesLines
2015-01-27gpu: host1x: Provide a proper struct bus_typeThierry Reding1-2/+2
Previously the struct bus_type exported by the host1x infrastructure was only a very basic skeleton. Turn that implementation into a more full- fledged bus to support proper probe ordering and power management. Note that the bus infrastructure needs to be available before any of the drivers can be registered. This is automatically ensured if all drivers are built as loadable modules (via symbol dependencies). If all drivers are built-in there are no such guarantees and the link order determines the initcall ordering. Adjust drivers/gpu/Makefile to make sure that the host1x bus infrastructure is initialized prior to any of its users (only drm/tegra currently). v2: Fix building host1x and tegra-drm as modules Reported-by: Dave Airlie <> Reviewed-by: Sean Paul <> Reviewed-by: Mark Zhang <> Signed-off-by: Thierry Reding <>
2013-10-31drm/tegra: Move subdevice infrastructure to host1xThierry Reding1-0/+29
The Tegra DRM driver currently uses some infrastructure to defer the DRM core initialization until all required devices have registered. The same infrastructure can potentially be used by any other driver that requires more than a single sub-device of the host1x module. Make the infrastructure more generic and keep only the DRM specific code in the DRM part of the driver. Eventually this will make it easy to move the DRM driver part back to the DRM subsystem. Signed-off-by: Thierry Reding <>